Where is the switch for the dome light on the door

worked for me on my ole F150,I sprayed it in there until it dripped out the bottom of the door! Have told a bunch of people about this and they just look at me,like I'm crazy,then next time I see them,they say "I tried that and it worked"!

It’ll fix 85% of em - maybe more..!

Thank you I”ll give it a try